Your data file has commas as the decimal point. Use read.csv2 for such
files.
What happened was that PercentError was read as a factor, and you can't do
ANOVA on factors. The warning
> In addition: Warning message:
> using type="numeric" with a factor response will be ignored in:
> model.respo
I have exported a CSV file from my EXCEL worksheet and its last column
contained decimal values:
Subject;Group;Side;Difference;PercentError
M3;1;1;;
M5;1;1;375;18,75
M8;1;1;250;14,58
M10;1;1;500;12,50
M12;1;1;375;25,00
.
.
.
When I tried to do ANOVA test on it, R complained by givin error:
> A
